| Place of Origin |
Sichuan China (Mainland) |
| Brand Name |
Greatwall |
| Model Number |
customized |
| Standard or Nonstandard |
Nonstandard |
| Style |
O Ring |
| Material |
Rubber |
Patent products designed by the company, improving Glyd rings and Step seals significantly by replacing pressure compensating o-ring with u-ring and changing single sealing line into multiple sealing lines, resulting in no leakage under high/low pressures at a line speed below 8m/s.